Finding the Third Proportional to 28,677 and 62,890

Step by Step Solution

1. Step 1: Write the proportion equation
   28,677 : 62,890 = 62,890 : x
2. Step 2: Convert to fraction form
   28,677/62,890 = 62,890/x
3. Step 3: Cross multiply
   28,677x = 62,890 × 62,890
4. Step 4: Simplify right side
   28,677x = 3,955,152,100
5. Step 5: Solve for x
   x = 3,955,152,100/28,677
6. Step 6: Final answer
   x = 137,920.71